I think you're making this a little harder than it needs to be. Take a deep breath and don't get the shirts and be disapointed. There are a lot of ways of getting to where you want togo. But you and only you can make that decision. Nobody here is going to tell you what you need or want to do. The tank builders are always going to tell you theirs is better but agin you're the customer and its your choice. If they don't want to do it your way than I guess they don't want/need your money.
I doubt very much that you will find anybodies tank or ways of doing things exactly the same. But yet how many fantastic tanks do you see. My opinions are just that opinions and I like to do things a more natural approach with a sump/fuge system w/o mechanical filtration. Why b/c it makes sense to me. Others do it other ways and I respect everyone on here and their opinions. I just happened to start SW and happened along squidds' plumbing 101 and I have adopted that way of doing things. Trust me my LFS thinks I'm nuts but somehow they don't turn down my frags.....
So start with the tank. I prefer a center OF with the returns on the corners but that may restrict a CL system. So lets say 2 OFs and divid the back into three. This will allow the returns in the corners and will still accomoadte a CL if thats needed. Now you want SPS and that takes flow and I doubt you will get all of that out of the sump, so go with a CL to supliment flow for the criiters you want.
Lets just say that you go with a 225 and you want 10x out of the sump/fuge section of the system. 2250 gph and you need at least another 10x out of the CL. Well then how many outlets do you want need. You have stated that you like to move your rock around and not worry about to many CL outlets. That means lets stay with 2-3 and 1 large intake. Maybe you want to think about a wave making device?
Start with the tank and think things through. But you need to start somewhere and somebody is gonna say well you should have done this or that. Not everybody will agree on everything and you know what they say about opinions.....
Pick a course and stick to it!
But please don't give up! You have a real gift here jump on it!
Tim